Is there a way to find a clients location on a website using just jQuery. For example, if a user comes to my site, how could I find out what their approximate location is just using jQuery. For example, if a user came from San Francisco CA it would have some type identifier to let me know the user came from San Francisco CA. I wouldn't really need their exact location just the county or general area of origin.
edit: How is the information on http://flourishworks-webutils.appspot.com/req generated?
Thanks